FR2419981A1 - Appts. for the treatment of liq. metal - comprises heated permanent electrodes which are vertically displaceable into and out of the metal bath - Google Patents
Appts. for the treatment of liq. metal - comprises heated permanent electrodes which are vertically displaceable into and out of the metal bathInfo
- Publication number
- FR2419981A1 FR2419981A1 FR7822461A FR7822461A FR2419981A1 FR 2419981 A1 FR2419981 A1 FR 2419981A1 FR 7822461 A FR7822461 A FR 7822461A FR 7822461 A FR7822461 A FR 7822461A FR 2419981 A1 FR2419981 A1 FR 2419981A1
- Authority
- FR
- France
- Prior art keywords
- metal
- cylinder
- chamber
- treatment
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/08—Apparatus
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/10—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents
- C22B9/106—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals with refining or fluxing agents; Use of materials therefor, e.g. slagging or scorifying agents the refining being obtained by intimately mixing the molten metal with a molten salt or slag
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/20—Arc remelting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/10—Mountings, supports, terminals or arrangements for feeding or guiding electrodes
- H05B7/101—Mountings, supports or terminals at head of electrode, i.e. at the end remote from the arc
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Furnace Details (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The treatment of liq. metal in baths for e.g. degasification of the metal involves the use of a non-atmospheric conditions and electric arc heating using permanent electrodes heated by an alternating current. The treatment involves the use of an appts. having a gas-tight chamber with an upper part on which several electrode advance mechanisms are positioned, the mechanisms being controlled by pressurised fluid. The mechanisms comprise jacks formed of a cylinder, piston and rod which is electrically and/or mechanically connected with a corresp. permanent electrode. At least one support element is located outside the cylinder of each jack upon the upper part of the chamber, the element being secured to the piston rod. The cylinder is movable relative to the piston and is axially guided for movement through the upper part of the chamber to enter the chamber. The lower end of the cylinder has an attachment to which a permanent electrode can be secured. The electrodes are positioned without producing large forces tending to make them vibrate and possibly fracture so that the electrodes even when subjected to high voltages last longer than in conventional degasification devices.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782811877 DE2811877A1 (en) | 1978-03-18 | 1978-03-18 | DEVICE FOR TREATMENT OF METAL MELT UNDER NON-ATMOSPHERIC CONDITIONS AND WITH ARC HEATING USED BY PERMANENT ELECTRODES AND OPERATING PROCEDURES FOR THIS DEVICE |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2419981A1 true FR2419981A1 (en) | 1979-10-12 |
FR2419981B1 FR2419981B1 (en) | 1985-07-12 |
Family
ID=6034820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7822461A Expired FR2419981B1 (en) | 1978-03-18 | 1978-07-28 | DEVICE AND METHOD FOR TREATING METAL BATHS UNDER NON-ATMOSPHERE CONDITIONS WITH ELECTRIC ARC HEATING AND PERMANENT ELECTRODES |
Country Status (4)
Country | Link |
---|---|
AT (1) | ATA781278A (en) |
BE (1) | BE871007A (en) |
DE (1) | DE2811877A1 (en) |
FR (1) | FR2419981B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2494536A1 (en) * | 1980-11-17 | 1982-05-21 | Leybold Heraeus Gmbh & Co Kg | GRAPHITE ELECTRODE FOR MOUNTING IN AN ELECTRIC OVEN ELECTRODE HOLDER |
EP0135473A1 (en) * | 1983-08-13 | 1985-03-27 | Arc Technologies Systems, Ltd. | Electrode assembly for arc furnaces |
WO1987004583A1 (en) * | 1986-01-23 | 1987-07-30 | C. Conradty Nürnberg Gmbh & Co. Kg | Three-phase arc furnace |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3144926C2 (en) * | 1980-11-17 | 1987-04-16 | Leybold-Heraeus GmbH, 5000 Köln | Graphite electrode for use in an electrode holder of an electric furnace |
DE3722680A1 (en) * | 1987-07-09 | 1989-01-19 | Leybold Ag | Melting furnace with weight-dependent control of the melting block |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3240856A (en) * | 1963-06-11 | 1966-03-15 | Mc Graw Edison Co | Electric arc furnace |
US3393264A (en) * | 1964-06-15 | 1968-07-16 | Lectromelt Corp | Electric arc furnaces |
GB1154491A (en) * | 1965-06-09 | 1969-06-11 | Finkl & Sons Co | Method and apparatus for Treating Molten Metal under Vacuum |
DE1915961A1 (en) * | 1969-03-28 | 1971-01-28 | Schlienger Eng Co | Arc furnace |
FR2215775A1 (en) * | 1973-01-25 | 1974-08-23 | Standard Messo Duisburg | Vacuum arc heating of metallurgical vessels - in which the worn part of the electrode can be removed without removing and cooling the vacuum chamber cover |
DE2739483A1 (en) * | 1976-09-01 | 1978-03-02 | Canada Steel Co | COMPOSED ELECTRODE FOR ARC FURNACES |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB700580A (en) * | 1951-09-04 | 1953-12-02 | William Enoch Moore | Apparatus for controlling electric arc furnace electrodes |
-
1978
- 1978-03-18 DE DE19782811877 patent/DE2811877A1/en active Granted
- 1978-07-28 FR FR7822461A patent/FR2419981B1/en not_active Expired
- 1978-10-04 BE BE78190902A patent/BE871007A/en not_active IP Right Cessation
- 1978-10-31 AT AT781278A patent/ATA781278A/en not_active Application Discontinuation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3240856A (en) * | 1963-06-11 | 1966-03-15 | Mc Graw Edison Co | Electric arc furnace |
US3393264A (en) * | 1964-06-15 | 1968-07-16 | Lectromelt Corp | Electric arc furnaces |
GB1154491A (en) * | 1965-06-09 | 1969-06-11 | Finkl & Sons Co | Method and apparatus for Treating Molten Metal under Vacuum |
DE1565534B2 (en) * | 1965-06-09 | 1975-07-24 | Charles W. Finkl | Process for the vacuum treatment of steel |
DE1915961A1 (en) * | 1969-03-28 | 1971-01-28 | Schlienger Eng Co | Arc furnace |
FR2215775A1 (en) * | 1973-01-25 | 1974-08-23 | Standard Messo Duisburg | Vacuum arc heating of metallurgical vessels - in which the worn part of the electrode can be removed without removing and cooling the vacuum chamber cover |
DE2739483A1 (en) * | 1976-09-01 | 1978-03-02 | Canada Steel Co | COMPOSED ELECTRODE FOR ARC FURNACES |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2494536A1 (en) * | 1980-11-17 | 1982-05-21 | Leybold Heraeus Gmbh & Co Kg | GRAPHITE ELECTRODE FOR MOUNTING IN AN ELECTRIC OVEN ELECTRODE HOLDER |
EP0135473A1 (en) * | 1983-08-13 | 1985-03-27 | Arc Technologies Systems, Ltd. | Electrode assembly for arc furnaces |
WO1987004583A1 (en) * | 1986-01-23 | 1987-07-30 | C. Conradty Nürnberg Gmbh & Co. Kg | Three-phase arc furnace |
EP0234270A1 (en) * | 1986-01-23 | 1987-09-02 | C. CONRADTY NÜRNBERG GmbH & Co. KG | Three-phase arc furnace |
Also Published As
Publication number | Publication date |
---|---|
DE2811877C2 (en) | 1988-10-27 |
FR2419981B1 (en) | 1985-07-12 |
BE871007A (en) | 1979-02-01 |
DE2811877A1 (en) | 1979-10-04 |
ATA781278A (en) | 1993-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |